:root{--ink:#050c16;--panel:#091523;--text:#edf8fa;--muted:#6c8796;--subtle:#385363;--line:#17303d;--cyan:#58f6e5;--cyan-soft:#acece6;--pink:#fb67bf;--purple:#9872ec;--danger:#ff698b;--green:#86ffc6;--deep:#071c2b;--white:#fff;--mono:'SFMono-Regular',Consolas,'Liberation Mono',monospace;--font-sans:'Inter','Noto Sans JP',system-ui,sans-serif;--shadow-neon:0 0 28px #58f6e52b;--transparent:transparent}body{background:radial-gradient(ellipse at 50% 38%,var(--deep),var(--ink) 70%);color:var(--text);min-height:100svh;overflow-x:hidden;font-size:13px}body::before{content:'';position:fixed;inset:0;pointer-events:none;background-image:linear-gradient(var(--line) 1px,var(--transparent) 1px),linear-gradient(90deg,var(--line) 1px,var(--transparent) 1px);background-size:64px 64px;opacity:.12}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid 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